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Neither internal consistencies, mineral-pair concordances, nor agreements between differing dating methods necessarily validate radiometric dating.The large spread of values for igneous and metamorphic rocks (especially of the Precambrian) may indicate artificial imposition of time-values upon these rocks.
The first criticism is in regard to the format of this paper, which may be more the fault of the than John Woodmorappe, is that the references are all referred to by a number and are listed by these numbers rather than alphabetically.
113), that anomalous dates are not reported in the scientific literature (p.
114), that some geologists have "fudged" Rb-Sr isochrons (p.
The Phanerozoic section is subdivided into Woodmorappe's claims regarding the selective publication of dating results, the dating of sedimentary rocks, supposed rationalizations for discrepant igneous dates from petrographic and regional geologic evidence, and what he considers to be problematic results from the radiometric dating of biostratigraphically-bracketed igneous rocks.
The Precambrian section is subdivided into claims regarding the consistency and concordance of radiometric dates, the alleged violations of superposition and cross-cutting relationships from radiometric age data, and supposedly problematic age values for igneous and metamorphic terranes.
102): Here I agree with the author, radiometric dating techniques are best understood in their geologic context.